US6204555B1 - Microwave-frequency hybrid integrated circuit - Google Patents
Microwave-frequency hybrid integrated circuit Download PDFInfo
- Publication number
- US6204555B1 US6204555B1 US09/077,761 US7776199A US6204555B1 US 6204555 B1 US6204555 B1 US 6204555B1 US 7776199 A US7776199 A US 7776199A US 6204555 B1 US6204555 B1 US 6204555B1
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- recess
- board
- topological
- integrated circuit
- recesses
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- 238000001465 metallisation Methods 0.000 claims abstract description 29
- 239000004065 semiconductor Substances 0.000 claims abstract description 11
- 239000011230 binding agent Substances 0.000 claims abstract description 6
- 239000004020 conductor Substances 0.000 claims description 4
- 239000010949 copper Substances 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910002666 PdCl2 Inorganic materials 0.000 description 1
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 description 1
- 238000009718 spray deposition Methods 0.000 description 1
- AXZWODMDQAVCJE-UHFFFAOYSA-L tin(II) chloride (anhydrous) Chemical compound [Cl-].[Cl-].[Sn+2] AXZWODMDQAVCJE-UHFFFAOYSA-L 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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Definitions
- the present invention relates in general to electronic engineering and more specifically to a microwave hybrid integrated circuit (IC).
- IC microwave hybrid integrated circuit
- a microwave hybrid IC comprising a dielectric board having a topological metallization pattern and semiconductor chips which are arranged in the substrate so that the face surface of each chip with contact pads are located in the same plane with the substrate surface, and the contact pads of the chips are electrically connected to the topological metallization pattern see U.S. Pat. No. 4,772,914.
- the aforementioned hybrid IC is possessed of a dispersion in the circuit electrical parameters resulted from variations in the length of interconnecting wires due to possible displacement of the semiconductor chip along the bottom of the recess from one of its walls towards the other one.
- One more prior-art microwave hybrid IC is known, the circuit comprising a dielectric board with a topological metallization pattern and recesses, wherein the chips of the chip-type semiconductor devices are secured with the aid of a binder so that the face surface of the chips with the contact pads is coplanar with the board surface, and the contact pads of the chips are electrically connected to the topological metallization pattern (JP, B, 49-12794).
- the aforecited hybrid IC is possessed of a low reproducibility of its electrical parameters due to chip displacement along the bottom of the recess during its fitting with the resultant variations in the length of interconnecting wires.
- the principal object of the present invention is to provide a microwave hybrid integrated circuit, wherein the recesses are provided in the dielectric board, in which recesses the semiconductor chips being fixed, so as to allow enhancing the reproducibility and manufacturability of the electrical parameters of the IC.
- a microwave hybrid IC comprising a dielectric board provided with a topological metallization pattern and a number of recesses in which the semiconductor chips are fixed with a binder, the face surface of the chips provided with contact pads being coplanar with the board surface plane, while the contact pads of the chips are electrically connected to the topological metallization pattern, according to the present invention, the walls of each recess are inclined towards the board surface at an angle of 90.1 to 150°.
- the recesses may be metallized and the metal coating may be electrically connected to the topological metallization of the board.
- the board may be provided with the shield grounding metallization on its back side, and in the bottom of the recesses the metallized holes may be made, filled with an electrically and heat conducting material, for connection with the shield grounding metallization.
- FIG. 1 is a sectional view of the filed microwave hybrid IC
- FIG. 2 is a plan view of FIG. 1;
- FIG. 3 is a sectional view of another embodiment of the filed microwave hybrid IC.
- FIG. 4 is a sectional view of still another embodiment of the filed microwave hybrid IC.
- the microwave hybrid IC comprises a 0.5 mm thick dielectric board 1 (FIGS. 1 and 2) made of, e.g., Polycor and having a topological metallization pattern 2 on the face side thereof
- the topological metallization may be of a Cr—Cu structure (3 ⁇ m thick applied by a spray-deposition technique)—Cu (3 ⁇ m thick electroplated)—Ni (0.5 ⁇ m thick electroplated)—Au (3 ⁇ m thick electroplated).
- a distance between a chip 5 and the upper edge of the recess 3 equals 87 ⁇ m.
- An adhesive 1 such as -C (Standard Specifications bIyO 0.028.052 TY) may be used as the binder 4 .
- the chip 5 of the chip transistor 3325A-5 of 0.5 ⁇ 0.5 ⁇ 0.15 mm is mounted in the recess 3 so that its surface is coincided with the surface plane of the board 1 .
- Contact pads 6 of the chip 5 are electrically connected to the topological metallization pattern 2 by means of a 15 ⁇ m diameter golden wire 7 .
- the recesses 3 may be metal-coated and the structure of metallization 8 may be, e.g., Pd—Ni (0.2 ⁇ m thick chemically deposited)—Cu (3 ⁇ m electroplated)—Ni (0.5 ⁇ m electroplated)—Au (3 ⁇ m electroplated).
- metallized holed 9 are made having a diameter of, e.g., 100 ⁇ m filled with an electrically and heat conducting material 10 , for instance, grown with copper preliminarily activated with PdCl 2 +SnCl 2 .
- the back side of the board 1 is provided with a shield grounding metallization 11 having a structure similar to that of the metallization 2 on the face side of the board 1 .
- the microwave hybrid integrated circuit functions as follows,:
- a signal is applied to the input of the transistor amplifier stage, which undergoes an appropriate conversion, whereupon the amplified signal arrives at the stage output.
- the filed microwave hybrid integrated circuit allows to increase the reproducibility of electrical circuit parameters by reducing the variation in the length of the interconnecting wires (leads) of the semiconductor chip to increase the manufacturability due to a more accurate fitting of the chip in the recess and its orientation therein, as well as due to a simpler connection between the recess metallization and the topological metallization pattern. All the mentioned above makes it possible to reduce the laboriousness of the circuit trimming procedure.
- the metallization of the recesses and their connection to the topological metallization pattern allows to enhance the circuit reliability.
- the present invention can be used in semiconductor microelectronics.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Structures For Mounting Electric Components On Printed Circuit Boards (AREA)
- Combinations Of Printed Boards (AREA)
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
- Waveguides (AREA)
- Structure Of Printed Boards (AREA)
- Design And Manufacture Of Integrated Circuits (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
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Abstract
The microwave hybrid integrated circuit, is providing having a dielectric board (1) provided with a topological metallization pattern (2) and a number of recesses (3) in which semiconductor chips (5) are fixed with a binder (4). The face surface of the chips (5) provided with contact pads (6) are coplanar with the surface of the board (1), and the contact pads (6) of the chips (5) are electrically connected to the topological metallization pattern (2). The walls of the recesses (3) are inclined towards the plane of the board (1) at an angle (α) of 90.1 to 150°.
Description
The present invention relates in general to electronic engineering and more specifically to a microwave hybrid integrated circuit (IC).
A microwave hybrid IC is known, the circuit comprising a dielectric board having a topological metallization pattern and semiconductor chips which are arranged in the substrate so that the face surface of each chip with contact pads are located in the same plane with the substrate surface, and the contact pads of the chips are electrically connected to the topological metallization pattern see U.S. Pat. No. 4,772,914.
The aforementioned hybrid IC, however, is possessed of a dispersion in the circuit electrical parameters resulted from variations in the length of interconnecting wires due to possible displacement of the semiconductor chip along the bottom of the recess from one of its walls towards the other one.
One more prior-art microwave hybrid IC is known, the circuit comprising a dielectric board with a topological metallization pattern and recesses, wherein the chips of the chip-type semiconductor devices are secured with the aid of a binder so that the face surface of the chips with the contact pads is coplanar with the board surface, and the contact pads of the chips are electrically connected to the topological metallization pattern (JP, B, 49-12794).
The aforecited hybrid IC is possessed of a low reproducibility of its electrical parameters due to chip displacement along the bottom of the recess during its fitting with the resultant variations in the length of interconnecting wires.
The principal object of the present invention is to provide a microwave hybrid integrated circuit, wherein the recesses are provided in the dielectric board, in which recesses the semiconductor chips being fixed, so as to allow enhancing the reproducibility and manufacturability of the electrical parameters of the IC.
The foregoing object is accomplished due to the fact that in a microwave hybrid IC, comprising a dielectric board provided with a topological metallization pattern and a number of recesses in which the semiconductor chips are fixed with a binder, the face surface of the chips provided with contact pads being coplanar with the board surface plane, while the contact pads of the chips are electrically connected to the topological metallization pattern, according to the present invention, the walls of each recess are inclined towards the board surface at an angle of 90.1 to 150°.
Making the angle of inclination of the walls towards the plane of the board surface less than 90.1° does not give any positive results and making said angle more than 150° elongates substantially the length of connecting leads and hence the spurious inductance.
The recesses may be metallized and the metal coating may be electrically connected to the topological metallization of the board. The board may be provided with the shield grounding metallization on its back side, and in the bottom of the recesses the metallized holes may be made, filled with an electrically and heat conducting material, for connection with the shield grounding metallization.
Performing the walls of the recesses inclined towards the plane of the board surface at an angle α=90.1 to 150° ensures:
first, restricting the possibility of chip displacement along the bottom of the recesses and hence reducing the variation in the length of conductors interconnecting the contact pads with the topological metallization and therefore enhancing reproducibility of the circuit electrical parameters;
second, enhancing the accuracy of the chip fitting in the recess and its orienting therein, as well as simpliying the electric connection between metallization of the recess and the topological metallization, thereby increasing the manufacturability.
The present invention is illustrated by a detailed description of some specific exemplary embodiments thereof to be taken with reference to the accompanying drawings, wherein:
FIG. 1 is a sectional view of the filed microwave hybrid IC;
FIG. 2 is a plan view of FIG. 1;
FIG. 3 is a sectional view of another embodiment of the filed microwave hybrid IC; and
FIG. 4 is a sectional view of still another embodiment of the filed microwave hybrid IC.
The microwave hybrid IC, according to the invention, comprises a 0.5 mm thick dielectric board 1 (FIGS. 1 and 2) made of, e.g., Polycor and having a topological metallization pattern 2 on the face side thereof The topological metallization may be of a Cr—Cu structure (3 μm thick applied by a spray-deposition technique)—Cu (3 μm thick electroplated)—Ni (0.5 μm thick electroplated)—Au (3 μm thick electroplated). The board 1 has a number of recesses 3, each of, e.g., 0.6×0.6×0.16 mm having an angle α of inclination of the walls towards the plane of the board surface equal to α=120°. In this case, with the layer of a binder 4 on the bottom of the recess being 10 μm thick, a distance between a chip 5 and the upper edge of the recess 3 equals 87 μm. An adhesive 1 such as -C (Standard Specifications bIyO 0.028.052 TY) may be used as the binder 4.
The chip 5 of the chip transistor 3325A-5 of 0.5×0.5×0.15 mm is mounted in the recess 3 so that its surface is coincided with the surface plane of the board 1. Contact pads 6 of the chip 5 are electrically connected to the topological metallization pattern 2 by means of a 15 μm diameter golden wire 7.
The recesses 3 (FIG.3) may be metal-coated and the structure of metallization 8 may be, e.g., Pd—Ni (0.2 μm thick chemically deposited)—Cu (3 μm electroplated)—Ni (0.5 μm electroplated)—Au (3 μm electroplated).
In the bottom of the recess 3 (FIG.4) metallized holed 9 are made having a diameter of, e.g., 100 μm filled with an electrically and heat conducting material 10, for instance, grown with copper preliminarily activated with PdCl2+SnCl2. The back side of the board 1 is provided with a shield grounding metallization 11 having a structure similar to that of the metallization 2 on the face side of the board 1.
The microwave hybrid integrated circuit, according to the invention, functions as follows,:
A signal is applied to the input of the transistor amplifier stage, which undergoes an appropriate conversion, whereupon the amplified signal arrives at the stage output.
The filed microwave hybrid integrated circuit allows to increase the reproducibility of electrical circuit parameters by reducing the variation in the length of the interconnecting wires (leads) of the semiconductor chip to increase the manufacturability due to a more accurate fitting of the chip in the recess and its orientation therein, as well as due to a simpler connection between the recess metallization and the topological metallization pattern. All the mentioned above makes it possible to reduce the laboriousness of the circuit trimming procedure.
Moreover, the metallization of the recesses and their connection to the topological metallization pattern allows to enhance the circuit reliability.
In describing the disclosed embodiments of the present invention, specific narrow terminology is used for the sake of clarity. However, the invention is not restricted to the specific terms so selected, and it should be understood that each such term covers all equivalent elements functioning in a similar way and used for solving similar problems.
Although the present invention has been described herein with reference to the preferred embodiment, it will be understood that various modifications and alterations may occur to the details of construction without departing from the spirit and scope of the invention, as will be readily understood by those skilled in the art.
All these modifications and alterations should be considered to remain within the limits of the spirit and scope of the invention and the claims that follow.
The present invention can be used in semiconductor microelectronics.
Claims (2)
1. A microwave hybrid integrated circuit, comprising:
a dielectric board having a plane, a surface and at least one recess, the recess includes a wall, the wall of the recess is inclined towards the plane of the board at an angle (∝) of 90.1 to 150°, and the recess includes a metalization;
a topological metalization pattern on the board, the topological metallization pattern is electrically connected to the metalization of the recess; and
a semiconductor chip having a surface, the semiconductor chip fixed in the recess with a binder, the surface of the semiconductor chip having a contact pad, the contact pad is coplanar with the surface of the dielectric board and is electrically connected to the topological metalization pattern.
2. The circuit of claim 1, wherein the dielectric board includes a back side and a shield on the back side, and the recess includes a bottom and metalized holes are provided in the bottom, the metalized holes being filled with an electrically and heat conducting material.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/RU1996/000294 WO1998015981A1 (en) | 1996-10-10 | 1996-10-10 | Microwave-frequency hybrid integrated circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
US6204555B1 true US6204555B1 (en) | 2001-03-20 |
Family
ID=20130049
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/077,761 Expired - Lifetime US6204555B1 (en) | 1996-10-10 | 1996-10-10 | Microwave-frequency hybrid integrated circuit |
Country Status (5)
Country | Link |
---|---|
US (1) | US6204555B1 (en) |
JP (1) | JP2000516044A (en) |
KR (1) | KR19990072029A (en) |
SE (1) | SE522105C2 (en) |
WO (1) | WO1998015981A1 (en) |
Cited By (8)
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DE10122221A1 (en) * | 2001-05-08 | 2002-11-21 | Danfoss Silicon Power Gmbh | Power electronics module with base plate and substrate soldered to it has base plate recess with at least dimensions of substrate and with wall regions inclined from out to in |
US20030148555A1 (en) * | 2000-04-04 | 2003-08-07 | Masanori Akita | Method of manufacturing cof package |
US6707150B1 (en) * | 2002-10-24 | 2004-03-16 | Galaxy Pcb Co., Ltd. | Package support member with high heat-removing ability |
US20050218529A1 (en) * | 2004-04-06 | 2005-10-06 | Siemens Aktiengesellschaft | Circuit support for a semiconductor chip and component |
DE102004026210B4 (en) * | 2003-06-06 | 2009-08-13 | Fuji Electric Device Technology Co. Ltd. | Device for detecting a physical quantity and housing for a device for measuring a physical quantity |
US20140252655A1 (en) * | 2013-03-05 | 2014-09-11 | Maxim Integrated Products, Inc. | Fan-out and heterogeneous packaging of electronic components |
CN105140189A (en) * | 2015-07-08 | 2015-12-09 | 华进半导体封装先导技术研发中心有限公司 | Board-level fan-out chip packaging device and preparation method thereof |
CN113359248A (en) * | 2021-06-02 | 2021-09-07 | 青岛海信宽带多媒体技术有限公司 | Optical module |
Families Citing this family (5)
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US6259148B1 (en) * | 1998-08-13 | 2001-07-10 | International Business Machines Corporation | Modular high frequency integrated circuit structure |
WO2001062517A1 (en) * | 2000-02-22 | 2001-08-30 | Toray Engineering Company,Limited | Noncontact id card or the like and method of manufacturing the same |
JP3844467B2 (en) * | 2003-01-08 | 2006-11-15 | 沖電気工業株式会社 | Semiconductor device and manufacturing method thereof |
US7253735B2 (en) | 2003-03-24 | 2007-08-07 | Alien Technology Corporation | RFID tags and processes for producing RFID tags |
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- 1996-10-10 JP JP51743398A patent/JP2000516044A/en active Pending
- 1996-10-10 WO PCT/RU1996/000294 patent/WO1998015981A1/en not_active Application Discontinuation
- 1996-10-10 KR KR1019980704323A patent/KR19990072029A/en not_active Application Discontinuation
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US5157479A (en) * | 1987-04-28 | 1992-10-20 | Sumitomo Electric Industries, Ltd. | Semiconductor device being capable of improving the packing density with a high heat radiation characteristics |
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Cited By (15)
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US20030148555A1 (en) * | 2000-04-04 | 2003-08-07 | Masanori Akita | Method of manufacturing cof package |
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DE10122221A1 (en) * | 2001-05-08 | 2002-11-21 | Danfoss Silicon Power Gmbh | Power electronics module with base plate and substrate soldered to it has base plate recess with at least dimensions of substrate and with wall regions inclined from out to in |
US6707150B1 (en) * | 2002-10-24 | 2004-03-16 | Galaxy Pcb Co., Ltd. | Package support member with high heat-removing ability |
DE102004026210B4 (en) * | 2003-06-06 | 2009-08-13 | Fuji Electric Device Technology Co. Ltd. | Device for detecting a physical quantity and housing for a device for measuring a physical quantity |
US7256504B2 (en) | 2004-04-06 | 2007-08-14 | Siemens Aktiengesellschaft | Circuit support for a semiconductor chip and component |
DE102004016940A1 (en) * | 2004-04-06 | 2005-10-27 | Siemens Ag | Circuit carrier for a semiconductor chip and component |
US20050218529A1 (en) * | 2004-04-06 | 2005-10-06 | Siemens Aktiengesellschaft | Circuit support for a semiconductor chip and component |
DE102004016940B4 (en) | 2004-04-06 | 2019-08-08 | Continental Automotive Gmbh | Circuit carrier for a semiconductor chip and a component with a semiconductor chip |
US20140252655A1 (en) * | 2013-03-05 | 2014-09-11 | Maxim Integrated Products, Inc. | Fan-out and heterogeneous packaging of electronic components |
US9704809B2 (en) * | 2013-03-05 | 2017-07-11 | Maxim Integrated Products, Inc. | Fan-out and heterogeneous packaging of electronic components |
CN105140189A (en) * | 2015-07-08 | 2015-12-09 | 华进半导体封装先导技术研发中心有限公司 | Board-level fan-out chip packaging device and preparation method thereof |
CN105140189B (en) * | 2015-07-08 | 2019-04-26 | 华进半导体封装先导技术研发中心有限公司 | Plate grade fan-out-type chip package device and preparation method thereof |
CN113359248A (en) * | 2021-06-02 | 2021-09-07 | 青岛海信宽带多媒体技术有限公司 | Optical module |
CN113359248B (en) * | 2021-06-02 | 2022-11-15 | 青岛海信宽带多媒体技术有限公司 | Optical module |
Also Published As
Publication number | Publication date |
---|---|
KR19990072029A (en) | 1999-09-27 |
JP2000516044A (en) | 2000-11-28 |
WO1998015981A1 (en) | 1998-04-16 |
SE9801988L (en) | 1998-06-04 |
SE522105C2 (en) | 2004-01-13 |
SE9801988D0 (en) | 1998-06-04 |
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